Vertical Mill

Vertical Mill Overview

LM series vertical mill is the newest grinding machine, which is designed specially to solve the problems of low capacity and high consumption of traditional industry mills. With a decade of years’ research of mills, our vertical mill is designed and manufactured based on advanced design idea, and integrates the advanced international technology and years of mill-producing experience.

LM series vertical mill adopts reliable structure and reasonable process flow, and this series vertical mill is ideal equipment that integrated with drying, milling, classifier, and elevator. Especially, this vertical mill can fully meets the requirement of clients in the high production of powder and its main technical and economy indicator reaches the international level.

LM Vertical Mill Application

(1) The industries our vertical mill mainly applied in:
LM series vertical mill can be widely used in cement making, power, metallurgy, chemical and nonmetalliferous ore industries.

(2) The materials our vertical mill can deal with:
LM series vertical mill is used to grind lumpy, granular and powdery materials to the required size.

LM Vertical Mill Main Features and Benefits

Low Investment Cost
LM series vertical mill can crush, dry, grinding, classifying, so the system of this vertical mill is simple, and occupation area is about 50% of ball mill system. In addition, it can be installed outside, so LM vertical mill will reduce a large number of investment costs.

Low Operation Cost
(1) High efficiency: Roller of this series vertical mill compacted materials directly onto the grinding disc, so power consumption is low. Compared with ball mill, vertical mil saves energy consumption by 30% ~ 40%
(2) Less wear and tear: As the roller is not in direct contact with the disc, and material of the roller and liner is high quality, this series vertical mill life time is long.

High Drying Ability
As the hot air inside contacts directly with the material, drying ability is higher, and it saves energy. By regulating the air temperature, this series vertical mill can meet requirements with different humidity.

Simple and reliable operation
LM series vertical mill is equipped with automatic control systems, so remote control makes it easy to operate, and this vertical mill is equipped with one device, which prevents the roller from contacting with the liner directly, and avoids the destructive impact and severe vibration.

The stability of product quality
When the material stays in the mill for a short time, vertical mill is easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.

Maintenance convenience
By repairing fuel tank, rotating the arm, this series vertical mill is fast to replace the roller sleeve, and liner, and reduce the downtime loss.

Environmental protection
LM series vertical mill is with small vibration, low noise, and the overall sealing. The system works under negative pressure, so there is no dust going out, and our vertical mill meets the requirements of the state Environmental Protection.

LM Vertical Mill Working Principle

The working principle of LM vertical mill:

(1) The motor of our vertical mill drives the grinding table through decelerator. When the materials fall down the center of grinding table from feed opening, hot air comes into the mill from the air inlet.

(2) Materials inside the vertical mill move to the edge of the grinding table due to the centrifugal force.

(3) When passing the groove on the grinding table, the materials are pulverized by the roller.

(4) The materials crushed by our vertical mill are brought up by vane high-speed airstream, at the same time the larger particles fall down to the grinding table for regrinding.

(5) The materials in the airstream pass the separator on the top of the vertical mill, while the coarse powder fall down the grinding table for regrinding under the function of rotation rotor.

(6) In this way, the fine powder comes out with the airstream, and is gathered by the dust catcher of the vertical mill.

(7) When the hot airstream inside the vertical mill meet the materials content with moisture, the latter will be dried.

(8) Through adjusting the temperature of the hot airstream, our vertical mill can meet different material’s requirement; through adjusting seperator, our vertical mill can reach proper fineness of materials.

Vertical Mill Technical Data

Model		LM130K	LM150K	LM170K	LM190K	LM220K	LM240K
Turnplate diameter (mm)		1300	1500	1700	1900	2200	2400
Capacity (t/h)		10~30	13~40	18~57	23~72	36~114	41~128
Final product size	μm	170~45	170~45	170~45	170~45	170~45	170~45
Final product size	mesh	80~325	80~325	80~325	80~325	80~325	80~325
Final product water percentage		≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Max. input size (mm)		38	40	42	45	50	55
Best water percentage of raw material		4%	4%	4%	4%	4%	4%
Drying needed if water percentage is more than		15%	15%	15%	15%	15%	15%
Input wind temperature (℃)		350	350	350	350	350	350
Output wind temperature (℃)		70~95	70~95	70~95	70~95	70~95	70~95
Main motor power (KW)		185~220	250~280	355~400	450~500	710~800	800~900
Overall dimension	L mm	3500	4200	4700	8500	10200	11700
	W mm	3400	3900	4500	5600	6700	7700
	H mm	5800	7100	8300	8800	10600	12200
Weight (t)		48	75	90	100	125	160

Model		LM130M	LM150M	LM170M	LM190M	LM220M	LM240M
Turnplate diameter (mm)		1300	1500	1700	1900	2200	2400
Capacity (t/h)		10~15	16~22	20~28	26~35	35~45	40~50
Coal powder fineness (R0.08)		15%	15%	15%	15%	15%	15%
Coal powder water percentage		1%	1%	1%	1%	1%	1%
Max. input size (mm)		38	40	42	45	50	55
Input material water percentage		15%	15%	15%	15%	15%	15%
Input wind temperature (℃)		350	350	350	350	350	350
Output wind temperature (℃)		75~95	75~95	75~95	75~95	75~95	75~95
Raw coal Hardgrove grindability index (HGI)		>55	>55	>55	>55	>55	>55
Main motor power (KW)		185	250	315	400	500	560
Overall dimension	L mm	3500	4200	4700	8500	10200	11700
	W mm	3400	3900	4500	5600	6700	7700
	H mm	5800	7100	8300	8800	10600	12200
Weight (t)		46	75	94	100	122	157

Note: This specification is just reference, any changes are subject to the Belt Conveyor products.

More About Vertical Mill

GALLERY